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Phys. Rev. Lett. 92, 016401 (2004) [4 pages]

Two Fluid Description of the Kondo Lattice

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Satoru Nakatsuji1,2, David Pines3,4, and Zachary Fisk1,3
1National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
2Department of Physics, Kyoto University, Kyoto 606-8502, Japan
3K764 Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
4Institute for Complex Adaptive Matter, University of California Office of the President, Oakland, California 94607, USA

Received 14 July 2003; published 6 January 2004

We present a two-fluid description of the Kondo lattice that is based on an analysis of CeCoIn5 at various levels of dilution with La. We show that thermal and transport measurements provide evidence for the survival of the Kondo impurity component in the lattice as T→0  K, and that the evolution of the low temperature properties of the Kondo lattice can be viewed as the partial condensation of the lattice of Kondo centers into a heavy fermion fluid. The resulting two-fluid model is shown to be applicable to the general problem of the ground state of the Kondo lattice.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.016401
DOI:
10.1103/PhysRevLett.92.016401
PACS:
71.27.+a, 75.20.Hr, 75.30.Mb
 
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